Scale



6,1929, JAENICHEN I 1,723,354

SCALE Filed Nov. 19, 1927 3 Sheets-Sheet l I WK A TTORNE Y.

Aug. 6, 1929. L. JAENICHEN 1,723,354

SCALE Filed Nov. 19, 1927 3 Sheets-Sheet 2 jw' MM BY I Y ATTORNEY Aug.6, 1929. 1.. JAENICHEN scALE Filed Nov. \19. 1927 3 Sheets-Sheet 3 v I{V V EN TOR A TTORNEY.

Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

LOUIS JAENICHEN, 0F SPRINGFIELD TOWNSHIP. OAKLAND COUNTY, MICHIGAN, AS-

SIGNOR TO THE STANDARD COMPUTING SCALE COMPANY, OF DETROIT, MICHIGAN,

A CORPORATION OF MICHIGAN.

SCALE.

Application filed November 19, 1827.

The present invention relates to counter scales and particularly toscales of the type using a swinging weight in the place of springs.

Among the objects of the invention is 1mproved mechanism for actuatingthe indicating means.

Another object is to provide improved means for adjustment of theindicator means.

And still another object is improved means for permitting shipment ofthe scale,

' after factory adjustment, without disturbing such adjustment.

Still other objects will readily occur to those skilled in the art uponreference to the following description and accompanying drawings inwhich Fig. 1 is a side elevation with parts re moved of a scaleembodying the invention;

Fig. 2 is a plan view of the weighing levers;

Fig. 3 is an enlarged elevation of the counter weight mechanism;

Fig. 4 is a similar view of a modified form of the latter;

Fig. 5 is a side elevation of the rack adjusting guide.

As shown in the drawings the scale comprises a platform lever housing 10mounted upon a base frame 11, which latter also supports the mechanismand is provided with leveling feet 12. Housing 10'carries at one end anupright housing 13 serving to support and enclose the indicating drum 14and the actuating mechanism therefor.

Base frame 11 is provided with two upright posts 20, one oneach sideeach having two bearings therein, and in the forward bearings (i. e.,those toward the indicator end of the scale) are the knife edgesupporting fulcrums 21 of the primary lever 22. This lever 22 has at itsforward end an arm 23 by-means of which this end of the lever issupported in vertically movable means to be described.

Lever 22 also is provided a short distance forward of bearings 21 with apair of upturned knife edges 24 and somewhat further forward withanother pair of upturned lmife edges 25.

The rear end of lever 22, that is the arm beyond bearings 21 is providedwith a slide 26 upon which is mounted the set weight 27 Serial No.234,353.

accurately adjustable to position by any suitable means (not shown).

A secondary lever 30 is provided with pivot 33 at its forward endcoacting with a bearing in the lower end of a pin 34 which in turn hasan upturned pivot coacting with a bearing in a cross member 35 mountedon a pair of posts 36 secured to base frame 11.

The rear end of lever 30 is provided with a pair of upturned knife edges37 which with the knife edges 25 furnish four points of support forplatform frame 40. The latter is provided with four posts 41 havingbearings in their lower ends adapted to coact with the knife edges 25and 37. A suitable platform 42 rests upon frame 40 and a guard 43 may beattached to the frame 40 as desired.

As mentioned above the forwardly extending arm 23 of lever 22 issupported in vertically movable means and this is shown best in Fig. 3.As shown in this figure, the end of arm 23 is provided with a pivot pin45 coacting with a bearing 46 carried in a stir-' rup 47. This stirrup47 is suspended on a strap or wire 48 which is secured at its upper endto the upper end of a curved member 50 as by a screw 49 so that for aportion of its length the strap or wire 48 in rest position lies uponthe curved surface. Member 50 is at one end of a counterpoise lever 51which is provided with a knife edge 52 supported in a bearing 53 carriedat the upper end of a pedestal 54 mounted on the base frame 11. At theother end of the lever 51 is a second curved member 60 whose curvedsurface is an arc whose center is at the edge of knife edges 52 andwhose radius is somewhat longer than the radius of member 50.

tending ends 69 provided with adjusting weights 70. One of the ends 69is provided with a continuation 71 carrying the pivot pin 65 and also alaterally extending arm :sl' and'forming part of thelever 51.

' ber 50with its head in the slot 87. the bolt 88 will change theangular relation ;,It:is preferred to makethe lever 51 and arm 81Iin.three parts, member 60, arm 81 and'member'50 being separate and carriedcnacylindrical core 85 in which is mounted :the knifeedge 52. The piecescarrying 'member 50 and arm- 81 will befixed'on core "85 by set-screwsas at 86, but member 50 will be 'angu'larly adjustablethereon. Suchadjustment may be accomplished by providing aradially extending slot 87in arm 81 and 'an eccentric headed bolt 88 in the mem- Rotating of thetwo parts and the adjusted position ,may then be maintained by meansofscrews "89 threaded into member 60. 'Thesescrews may also be utilizedtoaflixa graduated scale 90 serving with the slot 91 in bolt 88 toindicate the adjustment.

'Another feature of the presentscale ;is

the means for relative adjustment of rack 75 andgear 76,-an'd guidingthe rack-"in scale operation. The guide consists of a bracket 100mountedon housing 13 and extending upward to opposite the point'ofengagement-of the rack and gear. This bracket-near itsupper end carriesa spring -an'd holding it in engagement with the gear. This spring armis held outwardly from the bracket 100 in its adjusted position "by aarm-101 whose'upper end is provided with a U-shapedguide 102 embracingrack 75 -screw 103- whose'head lies against the end of a screw bushing'104. The adjustmentis made 'by-so'locatingbushing 104 thatthe =-screw103 is in its extreme inward position for '-proper adjustment.

may :be set-at the/factory and the spring cured in disengagement forsuch purpose.

Thebushing 104 released for shipping, the'rack 'being se- Properadjustment when setting the scale 'upi'for use will then consistindriving in screw 1-03 to its inner position.

Fig. 4 illustrates aJmOdified formof the vpendulum assembly. In thisfigure, the :pendulum lever 151 is pivoted at 152 on a suitable supportindicated at 160 and-has -pivotally attached to one end as at 153 a rod154 with a stirrup.- 155 at its lower. end. for

the end of lever 23. The other end of lever 151 is provided with aneccentrically arranged curve'd member 156 upon which is carried thestrap or wire'157 having at its lower end stirrup 158 for the end oflever 66, the latter carrying therack- -as inuthe other form.

The chief differencev between these two .-forms of beams lies in thefactthat, in the first form, the beam actuating power is applied to theeccentric member while in the second form the power is applied to theconcentric member, 'i. =e.,; to "concentrically moving arm .158 of lever151. Nowhaving described the invention-rand the preferred form ofembodiment thereof, it 5 is to: be understood that the said. inven--.tion is tobe-limited, not to the'specific .de-

tails herein set forth, but, only bythe-scope of the claims whichfollow.

1.'In a scalehaving a weight indicator and a platform,=-supported ona-weighing leversystem, which system consists of main lever having afree end andzauXilia -y 1 levers, means for transferring theinomment 'ofthe-said free end to the weight-indicator,

said means comprising alever pivoted on a fixed support, and having atits-opposed ends curved-surfaceslying in paralleluvertlcal planes,'-tothe: upper end of one ofsard :CHFVGCLSUTftLCQS beingattachedcflexible-suspending means for the said free end,-.-and -totheuppertendof the other of saidsurfaces being attacheda'secondzfiexiblesur- I pending"means,amember carrying indicator actuating meanssuspended by. said second :flexible suspending means, said memberbeingadapted to fix the path of movement of. thetsaid actuating means,andwaiweighted arm fixed to said last mentioned. lever-sand tendingto=maintain the latter in .a.-. hori azontalposition;

2.-II1L scale havinga weight indicator and .a platform supported on .aweighing -lever system, ''which system consists of a main lever having afree end and auxiliary levers, means for transferring the movement ofthe said: free endto the weightindicator, said. means comprising a leverpivoted on; a

fixed: support, and having at tits iopposed. ends curved surfaces lyingin parallel vertical planes,-vone of. said surfaces being. concentricand one being eccentric to .the pivot of said lever,tothe. upper. end ofone of said curved surfaces :being attachedfiexible suspending meansfor-the said'free. end,1and-to the upperend of' the other of saidsurfaces being attached ai-secondflexible suspending .means,'. a membercarrying indicatoractuating means suspended by said secondflexiblesuspending means, said member being :adapted 'toL-fiX' the pathof movement of the said actuating means, and aweightedyarm fixedtosaidlast mentioned lever and-tending to maintain the latter in ahorizontal position.

3. In a scale having a weight indicator and a platform supported on aweighing lever system, which system consists of a main lever having afree end and auxiliary levers, means for transferring the movement ofthe said free end to the weight indicator, said means comprising a leverpivoted on a fixed support, and having at its opposed ends curvedsurfaces lying in parallel vertical planes, one of said surfaces beingconcentric and one being eccentric to the pivot of said lever, to theupper end of said eccentric curved surface being attached flexiblesuspending means for the said free end, and to the upper end of theother of said surfaces being attached a second flexible sus pendingmeans, a member carrying indicator actuating means suspended by saidsecond flexible suspending means, said member being adapted to fix thepath of movement of the said actuating means, and a weighted arm fixedto said last mentioned lever and tending to maintain the latter in ahorizontal position.

4. In a scale having a weight indicator and a longitudinally movablemember for actuating the same, a guide for said member, a supporttherefor, and means for adjusting said guide consisting of a bushingthreaded internally and externally mounted in said support, a screw insaid bushing of such length as to properly adjust the guide when screweddown tightly in said bushing, and means to fix the bushing in adjustedposition.

5. In a scale having a weight indicator and a longitudinally movablerack for actuating the same, a guide for said rack, a sup port thereforand means for adjusting said guide consisting of means adjustable towardand away from the rack, means to fix said adjustable means in adjustableposition, and a screw threaded in such adjustable means of such lengththat when screwed fully in moves said guide to the desired adjustedposition.

6. In a scale, a pendulum mounted on a knife edge of a pivot, saidpendulum having three adjustable arms extending radially from the pivot,one arm having a weight fixed to its extended end, each of the two otherarms having at the extended end thereof a surface parallel lengthwise toand curved about the longitudinal bearing edge of said pivot, each ofsaid three arms being adjustable in angular relation to said other armsand to the angular contour of said pivot and means for holding saidthree arms in such adjusted positions.

7. In a scale, a pendulum mounted on a pivot edge, said pendulum havingthree adjustable arms, the first arm having a weight fixed to itsextended end, the second arm at its extended end being connected by aflexible band to the load receiving platform lever system, the third armat its extended end being connected by a flexible band to the weightindicating mechanism, each of said three arms being adjustable inangular rela tion to the other arms and to the angular contour of saidpivot and means for holding said three arms in said adjusted positions.

LOUIS J AENICHEN.

